UA Sport Wireless Flex – Engineered by JBL


Wireless neckband headphones with all-day comfort and secure fit and safety for sport

$129.95129.95 each

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Made to Move in Every Way You Do.

UA Sport Wireless Flex headphones deliver secure fit for sports and all-day comfort. Flex zones adjust to find the perfect fit no matter the activity. UA Sport Wireless Flex headphones drive your workouts thanks to their big, powerful JBL Charged Sound. And Bluetooth® wireless enables easy, cord-free connection. UA Flex headphones are sweat resistant with advanced nano coating. Stay safe after dark with the new RunSafe™ LED. A long-lasting 11-hour battery features Speed Charge to deliver an hour of playback on just five minutes’ charge. Control music, volume, calls, mute and unmute the mic when you’re in a call, and even activate Siri® or Google Now™ with a long press.


General Specifications

Headphone cable length (m) 1.0
Headphone cable length (ft) 3.3
Weight (g) 21.0
Weight (oz) 0.74
Ear tip material Silicon
Bluetooth version 4.1
Headphone cable length (cm) 100.0

Audio Specifications

Driver size (mm) 8.6
Number of drivers per ear 1.0

Control and Connection Specifications

Bluetooth profiles HFP v1.6, HSP v1.2, A2DP v1.2, AVRCP v1.5
Bluetooth transmitter power <4 dbm
Bluetooth frequency 2.402GHz-2.48GHz
Bluetooth transmitted modulation GFSK,π/4DQPSK, 8DPSK


Dynamic frequency response range (Hz) 10Hz-22kHz
Battery Type Lithium-ion polymer (3.7V, 2*100mAh)
Charging time (hours from empty) 2.0
Speed Charging time (hours) 2.0
Talk time (hours) 11+
Maximum music play time with ANC off (hours) 11+
Play time (hours) 11+


Rechargable battery Yes
4-Button Remote/ Mic Yes
In-ear neckband Yes
Speed charge Yes
JBL Charged Sound Yes
Sweat Proof Yes
Wireless Yes
Hands Free Call Yes
RunSafe LED Yes
Siri/ Google Now Yes
Flex Zone Yes
Click here for a complete list of all specs for this product

Spec Sheet (EN)

English 402 KB

Manuals & Downloads

The latest owner's manuals, quick start guides, and documents.

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UA Sport Wireless Flex – Engineered by JBL is rated 3.6 out of 5 by 102.
Rated 5 out of 5 by from Best wireless headphone Best wireless headphone sound was great and good bass. Easy to connect to Bluetooth and long battery life.
Date published: 2019-08-12
Rated 5 out of 5 by from Very good sports earphones for the money Bought a refurb unit about a couple weeks ago and was really surprised how well this Bluetooth earphones are. The sound quality is very good with crisp and clear highs and mids. I bought this primarily for running but really enjoyed it that it is also now my go-to headset for the daily commute on the train to and from work. I was unsure about a collar around my neck but I really don’t notice it. Even on my jogs and the earpiece stays put. There was a variety of sizings for a secure fit. With Summer escaping us soon, the LED light will be a welcome feature for my evening runs.
Date published: 2019-08-12
Rated 5 out of 5 by from Great features Terribly pleased . The best choice when you need personal music during a work out
Date published: 2019-08-11
Rated 5 out of 5 by from Excellent...so far I've had now for a couple of weeks, and they are fantastic! I've noticed that the Bluetooth connection is kind of static with an iPhone 8 or a Moto Z Force when they're in my pocket. I only hope the battery lasts longer than the last JBLs I had.
Date published: 2019-08-11
Rated 5 out of 5 by from Ice Really Nice headphones. Great sound and battery life.
Date published: 2019-08-11
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After non-use they shut off to save the battery, which is normal. But why does it disconnect the Bluetooth so I can&rsquo;t answer the phone with the headset. Is this normal?&nbsp;

Asked by: Mrsdeltoro
We would like to work with you directly and get more information to help you with your issue. Please submit a case request at https://www.jbl.com/support-contact.html and the Customer Service Team will be more than happy to assist you.
Answered by: Mario at Customer service
Date published: 2019-08-02

How much the headphones weigh???

Asked by: John124
This product weighs 318 grams.
Answered by: Dan E
Date published: 2018-07-08

just how waterproof is this? like, take a shower waterproof, run in the rain waterproof, or just really sweaty waterproogf

Asked by: Legio Patris
The UA Sport Wireless Flex has an IPX5+ rating which makes it resistant to sweat and moisture.
Answered by: Mario at Customer service
Date published: 2018-11-20

Is it normal for the red light to go off after a few minutes while it's plugged in to charge? How do I know how much charge it has?

Asked by: Kylesleeps
The UA Sport Wireless Flex headphones has an LED indicator near the volume control buttons, where it would start blinking red once the battery charge goes low. There is no way of knowing the exact charge of the headphones, but if you start charging your unit, the same LED indicator with show a solid red light, and will go off once the battery has been fully charged.
Answered by: Mario at Customer service
Date published: 2018-08-28

Does it have caller name announcement feature? If not please suggest product with the same feature. Thanks.

Asked by: Tush
Thank you for your question. The JBL UA Flex does not have caller name announcement, but you can manually activate Siri and speak into the microphone and have her call the contacts in your phone. If you require further assistance,please submit a case request at www.jbl.com/support-contact.html and the Customer Service team will be more than happy to further assist you.
Answered by: Mario at Customer service
Date published: 2018-02-12

What are the three options of the LED lights? Different color? Flashing? What is it?

Asked by: Eclipse
Hi! The UA Sport Wireless Flex has a&nbsp;RunSafe mode.&nbsp;It is an LED indicator to keep you safe if you are walking or running outside after dark. When you press the microphone button (located on the LEFT arm) to enable the RunSafe mode feature. The first mode blinks continually. When you press the microphone again, the second mode is initiated which features 2 blinks on followed by 2 seconds without. Pressing the microphone again is the third mode which is 3 blinks on followed by 3 seconds without.
Answered by: Nick F
Date published: 2018-03-30

can I turn off the blue LED, that flashes 2X to tell me it is connected to my phome

Asked by: mkcmax
Hi there, the light indicators can't be disabled as they're built in and is a permanent feature of the product.
Answered by: Mario at Customer service
Date published: 2019-07-08

Could I know the exact size of headphone (mm) and power consumption?

Asked by: Kenneth_Choi
This information can be seen in the products specs.
Answered by: Karl Vincent
Date published: 2018-06-06
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